An air treatment article is provided, comprising: a semipermeable barrier and a plurality of multi-staged non film forming polymer abatement particles having a core polymer and at least one shell polymer; wherein the core polymer accounts for 1 to 25 wt% of the weight of the non film forming polymer abatement particles; wherein the semipermeable barrier is disposed between an air atmosphere and the non film forming polymer abatement particles; wherein the semipermeable barrier impedes passage therethrough by the non film forming polymer abatement particles; wherein the semipermeable barrier permits passage therethrough by a for treatment air containing a contaminant such that the for treatment air can make contact with the non film forming polymer abatement particles; wherein the non film forming polymer abatement particles have an affinity for the contaminant.
